I need help finding a certain ero-manga that I can't remember the name of.

The protagonist is in his school's news club or something like that, and he's got a crush on the club president. The president makes him find and take pictures of people having sex at the school. IIRC in the first chapter, he gets a blowjob from the president while taking pictures of some couple from outside a window. Later, he finds the president giving two guys oral and IIRC she lets one of the guys do her in the ass (she wanted to keep her virginity or something like that). One of the teachers comes up with an idea for getting the protagonist and club president together by having the protagonist see her about to get raped by another student (nobody thought that the president was a virgin, so they didn't think it would be a bad idea to force someone to have sex with her). The plan works, the protagonists saves her from being raped, they confess to each other, they fuck in front of everyone involved in the plan, and I think that was pretty much the end.

I've spent several hours looking for this on exhentai, but found nothing. This leads me to believe that either the manga is under-tagged (I tried so many different tags that I thought it would have), it was put in the wrong section (I was only searching in the manga section), I'm remembering something wrong and searching for a tag that isn't actually in the manga, or I just missed it while I was searching. So can someone please help me find this manga?